code: def pdf1(self):
      return pd.DataFrame(
          {
              "a": [1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 50],
              "b": [2, 3, 4, 5, 7, 9, 10, 15, 34, 45, 49],
          },
          index=[0, 1, 3, 5, 6, 8, 9, 9, 9, 10, 10],
      )
  
imports: import unittest
  import pprint
  import pandas
  import numpy
  from pyspark import pandas
  from pyspark.pandas.config import set_option, reset_option
  from pyspark.testing.pandasutils import have_plotly, plotly_requirement_message, PandasOnSparkTestCase, TestUtils
  from pyspark.pandas.utils import name_like_string
label_desc: Use image node_id 3 for calling the DataFramePlotPlotlyTestsMixin obj's underlying member method code with example usage: obj.pdf1() and returns: pd